159808543 has 4 divisors (see below), whose sum is σ = 160329400. Its totient is φ = 159287688.

The previous prime is 159808541. The next prime is 159808549. The reversal of 159808543 is 345808951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 159808543 - 2¹ = 159808541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159808543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159808541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259968 + ... + 260581.

It is an arithmetic number, because the mean of its divisors is an integer number (40082350).

Almost surely, 2^159808543 is an apocalyptic number.

159808543 is a deficient number, since it is larger than the sum of its proper divisors (520857).

159808543 is an equidigital number, since it uses as much as digits as its factorization.

159808543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520856.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 159808543 is about 12641.5403729134. The cubic root of 159808543 is about 542.6668976184. Note that the first 3 decimals are identical.

The spelling of 159808543 in words is "one hundred fifty-nine million, eight hundred eight thousand, five hundred forty-three".